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6.2.1. 845 Bias Levels

You have to adjust left and right 845 tube bias levels in each Amplifier separately.

Measurement is done via a multimeter at 2V DC (or 2000mV DC) setting. Insert the

black (-) probe into black socket and red (+) probe into one of the green sockets on

the rear panel. You should read a value about 0.500V (500mV) for each tube. If the

readings are different, then adjust the bias level via potentiometers near the EL34

tubes. A small flat screwdriver will be necessary to access internal bias trim pots.

ABSOLARE Push-Pull Mono Amplifier User Manual 1.2